Note the tiny small hole drilled on to the front aerodynamic cowling of where the Moskit exhausts will go - 4th Picture ( on the far right -> )the real aircraft had this small air duct ( for cooling )and I have never noticed another model which had spotted this feature .

(1) the pre-drilled hole for the forward cowling to create an airductand (2) the surgery carried out on the Kit Exhaust insert which used to also contain the Kit Exhausts ( which have had to be removed ) leaving the supporting plastic , as a support for the inserion of the" Moskit "Exhausts later - which are far , far superior